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Dyfyniad Arddull ChicagoMosey, Richard M. 2030, the Coming Tumult: Unlimited Growth on a Finite Planet. New York: Algora Pub., 2009.
Dyfyniad MLAMosey, Richard M. 2030, the Coming Tumult: Unlimited Growth on a Finite Planet. Algora Pub., 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.